This book is written by world-renowned biologist and primatologist Frans de Waal. He gives us insight into the minds of animals; minds that are far more intricate and complex than we originally thought. There are lots of interesting tidbits in here based on research involving crows, dolphins, parrots, sheep, wasps, bats, whales, octopi, and chimpanzees and bonobos which are our closest relatives. Some people assume that animals are inferior to us because they can't do what we're capable of doing, but what these people don't understand is that animals know what they have to know in order to survive and that every species is smart in their own way. I really enjoyed learning more about the way animal minds work - very interesting.